OMAPL138如何在Linux下使用EDMA3驱动

yyj

) p; i* u( K& Q: [* `

1. [code]EDMA sample test application
   2 M. q% ?& o8 V% R( ~* B
2. /*
   
3. * edma_test.c
   , V! K: K+ H+ E; Y2 x
4. *
   
5. * brief  EDMA3 Test Application
   0 ^/ U) b8 u& l! j, f( R
6. *
   
7. *   This file contains EDMA3 Test code.
   
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   8 c! w3 j* n3 I) N& c/ N
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    4 m! f+ y! P# U. T+ ^4 x
12. *
    3 ^4 }0 t3 b( B; s+ i$ I
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    8 h/ B! i& j$ |  p
14. *
    ( z( |0 F# K1 d# z9 x
15. * This program is free software; you can redistribute it and/or
    
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    3 o, z; h. |9 x1 k4 O4 Q& S$ I  L2 }* n
20. * kind, whether express or implied; without even the implied warranty
    : |1 X8 k- r& j7 I" Q8 S
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    
23. */
    
24. 
      c. v" k! L( G3 p; g, [6 P
25. #include <linux/module.h>
    0 O1 w( r! T' C& B* n
26. #include <linux/init.h>
    . c4 U" }$ V& i" q
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    4 b' U* E* A/ {( `7 j
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    , C1 z" c7 Q1 B" u, W, B
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    - g# |! `9 z5 w
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    3 U. p6 C9 w# t  e
42. /*#define EDMA3_DEBUG*/
    # @$ t+ v' F5 M5 K- w2 I$ {
43. 
    ' ^9 o6 u" T6 U$ B
44. #ifdef EDMA3_DEBUG
    ) v! L  V+ J1 s. `: R
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    . j% i7 L3 `# |' M- z  U
48. #else
    
49. #define DMA_PRINTK( x... )
    ) q  s$ Y& v9 j' n3 r* m! p6 ~
50. #define DMA_FN_IN
    : Z( C( A) D7 w# S" ^- {* d5 x
51. #define DMA_FN_OUT
    
52. #endif
    . i' l3 X, b4 i. U: u2 l( q( U" n8 ?
53. 
    2 a! E! Y! g9 y! F. Q2 G+ e6 O9 u
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    & y: q0 p3 @0 l" c. J
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    . h) [/ p* z7 d1 d. O3 k
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    # H4 }. N. d- U
62. static volatile int irqraised2 = 0;
    ) ?3 e' j: r' z4 {
63. 
    # ]/ V8 g- d3 n, I$ z
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    * s4 A0 N2 c% _6 v+ g
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    ) d) Y" F% t3 M. c& X
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    4 q6 H" [8 U0 q( |1 R
70. dma_addr_t dmaphysdest1 = 0;
    6 x. i8 j7 M+ k
71. dma_addr_t dmaphysdest2 = 0;
    8 a2 F4 ?( [+ \  R5 U' m4 o
72. 
    / [  H, f! V; x7 y! I7 u2 Z) v9 p
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    + `3 t2 ^8 ?4 ~2 e7 h
77. 
    " T; T( j0 j+ v. R
78. static int acnt = 512;
    2 G+ ?8 R1 {* N/ E4 o+ E# t# |
79. static int bcnt = 8;
    % q( n+ M3 l' F3 D9 I( j$ H
80. static int ccnt = 8;
    
81. 
    : ?7 [' [4 l2 u
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

+ R  U+ [! W$ G7 t      这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
/ I3 k& @! d) r" o, B- C% b     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。